Sandal upper



FIG. 1 is a top perspective view of a sandal upper showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof taken generally from the right-hand side of FIG. 2;

FIG. 5 is a side elevational view thereof taken generally from the left-hand side of FIG. 2;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines showings in FIGS. 1-7 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a sandal upper, as shown. 